Today kicks off the week of one the most important fights of this generation. Make no doubt about it, this is the most important fight in a very long time.

You have arguably the greatest fighter of his generation, Floyd Mayweather Jr., against the most fearless fighter of his generation, “Sugar” Shane Mosley. This will either make or break Floyd's legacy.

To get to the point though, I am kicking off fight week with the five reasons Floyd Mayweather Jr. will win the fight this Saturday. For the next four days I will have an article related to this super fight.

1. Defense

Everyone is talking about Shane’s combination of speed and power. You cannot deny that he has great power.

The problem I see with this is you can’t hurt what you can’t hit. Floyd tucks his chin and his reflexes can’t be matched. Winky Wright has very good defense, and Mosley has two losses to him.

2. Wear and Tear

Mosley has 12 more fights on his ledger and has been in more wars. Mosley has fought the better competition and that actually hurts him.

He has been in more wars than Mayweather and that will come back to haunt him. Also Mayweather has only fought five times since 2006, while Mosley has fought six times.

It may not seem like much, but Mosley has been in more wars during that time.

3. Corner

Mayweather will be with his uncle Roger Mayweather again for this fight. The saying “If it ain’t broke don’t fix it” applies here. Mayweather hasn’t lost yet and his uncle has been in his corner for most of his career.

Both Floyd and Roger are good boxing minds and have created a good combination.

4. Age

Neither man is a spring chicken, but Mosley is getting old. He is 38 years old, compared to 33 for Mayweather.

Mosley is clearly closer to the end than Mayweather is. I bring it up again, but the wars Mosley has engaged in adds to that already-old 38.

5. Mosley is Being Over-hyped

Mosley is a fearless fighter and is indeed one of the best fighters of this generation. When you look at his last three fights, though, you can tell he is slipping.

He lost to Miguel Cotto, knocked out Ricardo Mayorga, and knocked out Antonio Margarito. Seems like a good run.

If you look closer, the two wins aren’t so impressive. He was in danger of losing to the lesser-skilled Mayorga and we all know what happened with Margarito.

Also Margarito had the perfect style for Mosley. Plain and simple, I think Mosley’s value is being overestimated.

So there you have the five reasons that Floyd Mayweather Jr. will win this Saturday. It was hard to find five reasons, and this fight will be very good.

Tomorrow I will counter with five reasons “Sugar” Shane Mosley will take the zero from Floyd Mayweather Jr.